<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

</body>
<script>
    function Factory(name, age) {
        this.name = name;
        this.age = age;
    }

    var a = new Factory('momo', 18);
    console.log(a);
    
</script>

</html>